/* ============================================
   Dịch Sách — Design System
   Dark Mode • Glassmorphism • Premium
   ============================================ */

/* ---- CSS Variables ---- */
:root {
    --bg-primary: #050508;
    --bg-secondary: #0a0a0f;
    --bg-tertiary: #12121e;
    --bg-glass: rgba(255, 255, 255, 0.04);
    --bg-glass-hover: rgba(255, 255, 255, 0.08);
    --border-glass: rgba(255, 255, 255, 0.1);
    --border-focus: rgba(139, 92, 246, 0.6);

    --text-primary: #ffffff;
    --text-secondary: #b0b0d0;
    --text-muted: #7a7a99;
    --text-accent: #d8b4fe;

    /* ---- User Header & Auth Modal ---- */
    --auth-bg: rgba(10, 10, 20, 0.98);

    --accent-1: #9333ea;
    --accent-2: #c084fc;
    --accent-3: #7e22ce;
    --gradient-primary: linear-gradient(135deg, #7c3aed 0%, #4338ca 100%);
    --gradient-accent: linear-gradient(135deg, #a855f7 0%, #6366f1 100%);
    --gradient-success: linear-gradient(135deg, #22c55e 0%, #10b981 100%);
    --gradient-warm: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
    --gradient-blue: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);

    --success: #10b981;
    --warning: #fbbf24;
    --error: #ef4444;
    --info: #3b82f6;

    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 32px;

    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 50px rgba(139, 92, 246, 0.25);

    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --transition-fast: 0.2s ease;
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- User Header ---- */
.user-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
    background: var(--bg-glass);
    padding: 8px 16px;
    border-radius: 100px;
    border: 1px solid var(--border-glass);
}

.user-email {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.coin-badge {
    background: var(--bg-tertiary);
    padding: 2px 10px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--warning);
}

/* ---- Auth Modal ---- */
.auth-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-sm);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.auth-form input {
    width: 100%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    padding: 12px;
    color: var(--text-primary);
    font-family: inherit;
    transition: var(--transition-fast);
}

.auth-form input:focus {
    outline: none;
    border-color: var(--accent-1);
    box-shadow: 0 0 0 2px var(--border-focus);
}

.btn-google {
    background: white;
    color: #1a1a1a;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 12px;
}

.btn-google:hover {
    background: #f0f0f0;
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin: 16px 0;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-glass);
}

.divider:not(:empty)::before {
    margin-right: .5em;
}

.divider:not(:empty)::after {
    margin-left: .5em;
}

.btn-block {
    width: 100%;
}

.error-text {
    color: var(--error);
    font-size: 0.8rem;
    margin-top: 8px;
    text-align: center;
}

/* ---- Reset & Base ---- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ---- Nebula Background & Blobs ---- */
.nebula-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: -1;
    background: #020205;
}

.nebula-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(67, 56, 202, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.05) 0%, transparent 60%);
    filter: blur(60px);
    animation: nebulaFloat 30s infinite alternate ease-in-out;
    z-index: 1;
}

@keyframes nebulaFloat {
    0% {
        transform: scale(1) translate(0, 0);
    }

    100% {
        transform: scale(1.1) translate(20px, 10px);
    }
}

.starfield {
    position: absolute;
    inset: 0;
    z-index: 0;
    background: transparent;
}

.starfield::before,
.starfield::after {
    content: '';
    position: absolute;
    width: 2px;
    height: 2px;
    background: #fff;
    border-radius: 50%;
    opacity: 0.5;
}

/* Twinkling star layers created with box-shadows */
.starfield::before {
    box-shadow: 10vw 20vh #fff, 30vw 15vh #fff, 50vw 40vh #fff, 70vw 60vh #fff, 90vw 25vh #fff, 15vw 80vh #fff, 40vw 90vh #fff, 65vw 10vh #fff, 85vw 55vh #fff, 5vw 45vh #fff, 25vw 35vh #fff, 45vw 75vh #fff, 75vw 15vh #fff, 95vw 85vh #fff, 12vw 12vh #fff, 88vw 92vh #fff, 33vw 66vh #fff, 66vw 33vh #fff, 44vw 44vh #fff, 22vw 22vh #fff;
    animation: twinkle 4s infinite alternate;
}

.starfield::after {
    width: 1px;
    height: 1px;
    box-shadow: 5vw 10vh #fff, 25vw 30vh #fff, 45vw 20vh #fff, 65vw 50vh #fff, 85vw 70vh #fff, 10vw 85vh #fff, 35vw 95vh #fff, 60vw 5vh #fff, 80vw 40vh #fff, 0vw 55vh #fff, 20vw 15vh #fff, 40vw 65vh #fff, 70vw 90vh #fff, 90vw 10vh #fff, 55vw 55vh #fff, 18vw 48vh #fff, 72vw 28vh #fff, 38vw 78vh #fff, 82vw 18vh #fff, 11vw 81vh #fff;
    animation: twinkle 6s infinite alternate-reverse;
}

@keyframes twinkle {
    0% {
        opacity: 0.3;
        transform: scale(0.8);
    }

    100% {
        opacity: 0.8;
        transform: scale(1.2);
    }
}

.grid-overlay {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background-image:
        linear-gradient(rgba(139, 92, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(139, 92, 246, 0.03) 1px, transparent 1px);
    background-size: 80px 80px;
    transform: perspective(1000px) rotateX(75deg);
    animation: gridMove 100s linear infinite;
    z-index: 2;
}

@keyframes gridMove {
    0% {
        transform: perspective(1000px) rotateX(75deg) translateY(0);
    }

    100% {
        transform: perspective(1000px) rotateX(75deg) translateY(80px);
    }
}

.shooting-stars {
    position: absolute;
    inset: 0;
    z-index: 3;
    pointer-events: none;
}

.shooting-stars::before {
    content: '';
    position: absolute;
    top: -50px;
    left: 50%;
    width: 150px;
    height: 1px;
    background: linear-gradient(90deg, #fff, transparent);
    transform: rotate(135deg);
    animation: shootingStar 12s infinite ease-in;
    filter: drop-shadow(0 0 5px #fff);
}

@keyframes shootingStar {
    0% {
        transform: translateX(0) translateY(0) rotate(135deg);
        opacity: 1;
    }

    10% {
        transform: translateX(-500px) translateY(500px) rotate(135deg);
        opacity: 0;
    }

    100% {
        transform: translateX(-500px) translateY(500px) rotate(135deg);
        opacity: 0;
    }
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
    animation: moveBlob 20s infinite alternate ease-in-out;
    z-index: 1;
}

.blob-1 {
    width: 600px;
    height: 600px;
    background: rgba(139, 92, 246, 0.15);
    top: -100px;
    left: -100px;
}

.blob-2 {
    width: 500px;
    height: 500px;
    background: rgba(99, 102, 241, 0.12);
    bottom: -50px;
    right: -50px;
    animation-delay: -5s;
}

.blob-3 {
    width: 400px;
    height: 400px;
    background: rgba(236, 72, 153, 0.08);
    top: 40%;
    left: 60%;
    animation-duration: 25s;
    animation-delay: -10s;
}

@keyframes moveBlob {
    0% {
        transform: translate(0, 0) scale(1);
    }

    100% {
        transform: translate(100px, 50px) scale(1.1);
    }
}

#app {
    position: relative;
    z-index: 1;
}

/* ---- Utility Classes ---- */
.hidden {
    display: none !important;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    padding: 24px;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, transparent 100%);
    pointer-events: none;
    z-index: 1;
    border-radius: inherit;
}

.glass-card:hover {
    border-color: rgba(139, 92, 246, 0.4);
    transform: translateY(-5px) rotateX(2deg) rotateY(-2deg);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-3);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 100px;
    margin-left: 8px;
}

/* ---- Screens ---- */
.screen {
    display: none;
    min-height: 100vh;
    animation: fadeIn 0.4s ease;
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.screen-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    border-bottom: 1px solid var(--border-glass);
    background: rgba(10, 10, 15, 0.4);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.screen-header h2 {
    font-size: 1.15rem;
    font-weight: 600;
}

.step-indicator {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 4px 12px;
    border-radius: 100px;
}

/* ---- Landing Page: Navbar ---- */
.landing-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-glass);
}

.balance-container {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 12px;
    border-radius: 100px;
    border: 1px solid var(--border-glass);
}

.coin-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    color: #FFD700;
}

.coin-icon {
    filter: drop-shadow(0 0 5px rgba(255, 215, 0, 0.3));
    animation: coinPulse 2s infinite alternate;
}

.gold-token-icon {
    color: #FFD700;
    text-shadow: 0 0 8px rgba(255, 215, 0, 0.4);
    font-weight: bold;
}

@keyframes coinPulse {
    from {
        transform: scale(1);
        filter: drop-shadow(0 0 2px rgba(255, 215, 0, 0.2));
    }

    to {
        transform: scale(1.1);
        filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.5));
    }
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 24px;
}

.nav-brand,
.lp-footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: inherit;
    transition: opacity var(--transition-fast);
}

.nav-brand:hover,
.lp-footer-brand:hover {
    opacity: 0.8;
}

.nav-logo {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
}

.nav-title {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.landing-nav .user-header {
    margin-bottom: 0;
}

/* ---- Landing Page: Hero ---- */
.lp-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 24px 60px;
    text-align: center;
}

.lp-hero-inner {
    max-width: 760px;
    margin: 0 auto;
}

.lp-hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(96, 165, 250, 0.15));
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 100px;
    padding: 8px 20px;
    font-size: 0.85rem;
    color: var(--text-accent);
    margin-bottom: 28px;
    animation: fadeIn 0.6s ease;
}

.lp-hero-badge strong {
    color: var(--warning);
}

.lp-hero-title {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 20px;
    animation: fadeIn 0.8s ease;
    text-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.lp-hero-title span {
    display: inline-block;
    white-space: nowrap;
}

.lp-hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto 32px;
    animation: fadeIn 1s ease;
    text-shadow: 0 0 10px rgba(139, 92, 246, 0.1);
    text-wrap: balance;
}

.lp-hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
    animation: fadeIn 1.2s ease;
}

.lp-cta-btn {
    font-size: 1.05rem;
    padding: 14px 32px;
    box-shadow: 0 4px 24px rgba(139, 92, 246, 0.3);
}

.lp-hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    animation: fadeIn 1.4s ease;
}

.lp-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.lp-stat-num {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
}

.lp-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.lp-stat-divider {
    width: 1px;
    height: 32px;
    background: var(--border-glass);
}

/* ---- Landing Page: Sections ---- */
.lp-section {
    padding: 80px 24px;
}

.lp-section-alt {
    background: rgba(18, 18, 26, 0.5);
}

.lp-section-inner {
    max-width: 1000px;
    margin: 0 auto;
}

.lp-section-title {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.lp-section-desc {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto 48px;
    line-height: 1.6;
}

/* ---- Landing Page: Features Grid ---- */
.lp-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.lp-feature-card {
    padding: 28px 24px;
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.lp-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.lp-feature-icon {
    font-size: 2.4rem;
    margin-bottom: 16px;
}

.lp-feature-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.lp-feature-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ---- Landing Page: Steps (How It Works) ---- */
.lp-steps {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.lp-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.lp-step-num {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    color: white;
    box-shadow: 0 4px 16px rgba(139, 92, 246, 0.25);
}

.lp-step-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.lp-step-content p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.lp-step-connector {
    width: 2px;
    height: 32px;
    background: linear-gradient(to bottom, var(--accent-1), transparent);
    margin-left: 23px;
}

/* ---- Landing Page: Pricing ---- */
.lp-pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    align-items: start;
}

.lp-price-card {
    padding: 32px 24px;
    text-align: center;
    position: relative;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    overflow: visible;
}

.lp-price-card:hover {
    transform: translateY(-4px);
}

.lp-price-featured {
    border-color: var(--accent-1);
    box-shadow: 0 0 40px rgba(139, 92, 246, 0.2);
}

.lp-price-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    padding: 4px 16px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.lp-price-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.lp-price-amount {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.lp-price-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.lp-price-features {
    list-style: none;
    padding: 0;
    margin: 0 0 24px;
    text-align: left;
}

.lp-price-features li {
    padding: 6px 0;
    font-size: 0.88rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-glass);
}

.lp-price-features li:last-child {
    border-bottom: none;
}

/* ---- Landing Page: Final CTA ---- */
.lp-final-cta {
    text-align: center;
    margin-bottom: 32px;
}

.lp-final-cta strong {
    color: var(--warning);
}

/* Center the auth/config cards within the CTA section */
#lp-start .lp-section-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 40px;
    /* Add more space from top */
    min-height: 80vh;
    /* Ensure there's space at bottom */
    justify-content: flex-start;
}

/* Specific spacing for configuration card when it's the main focus */
#config-section:not(.hidden) {
    margin-top: 40px;
    margin-bottom: 100px;
}

.card-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* ---- Landing Page: Footer ---- */
.lp-footer {
    border-top: 1px solid var(--border-glass);
    padding: 32px 24px;
}

.lp-footer-inner {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.lp-footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.95rem;
}

.lp-footer-links {
    display: flex;
    gap: 12px;
    font-size: 0.85rem;
}

.lp-footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.lp-footer-links a:hover {
    color: var(--text-primary);
}

.lp-footer-links span {
    color: var(--text-muted);
}

.lp-footer-copy {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Old landing styles - keep for backward compatibility */
.landing-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    gap: 40px;
}

.landing-hero {
    text-align: center;
}

.logo-badge {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    animation: float 3s ease-in-out infinite;
    overflow: hidden;
    padding: 0;
}

.logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-8px);
    }
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 8px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.hero-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 8px;
    font-family: var(--font-mono);
}

/* ---- Responsive: Landing Page ---- */
@media (max-width: 768px) {
    .lp-hero {
        padding: 80px 16px 40px;
        min-height: auto;
    }

    .lp-hero-title {
        font-size: 2rem;
    }

    .lp-hero-subtitle {
        font-size: 1rem;
    }

    .lp-section {
        padding: 48px 16px;
    }

    .lp-features-grid,
    .lp-pricing-grid {
        grid-template-columns: 1fr;
    }

    .lp-footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .nav-inner {
        padding: 10px 16px;
    }

    .lp-hero-stats {
        gap: 16px;
    }
}


.config-card {
    width: 100%;
    max-width: 560px;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

/* ---- Form Elements ---- */
.form-group {
    margin-bottom: 16px;
    flex: 1;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.input-wrapper {
    position: relative;
}

.input-wrapper input {
    width: 100%;
    padding-right: 44px;
}

.input-wrapper .icon-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
}

input[type="text"],
input[type="password"],
select,
textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 0.9rem;
    transition: border-color var(--transition-fast);
    outline: none;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23a0a0b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

.form-row {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.lang-arrow {
    padding-bottom: 24px;
    color: var(--text-muted);
    font-size: 1.2rem;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 2px 12px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover:not(:disabled) {
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.5);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
}

.btn-outline:hover:not(:disabled) {
    background: var(--bg-glass-hover);
    border-color: rgba(255, 255, 255, 0.15);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 8px 12px;
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
}

.btn-lg {
    width: 100%;
    padding: 14px;
    font-size: 1rem;
    margin-top: 16px;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-size: 0.9rem;
}

.icon-btn:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
}

/* ---- Upload Zone ---- */
.upload-zone {
    border: 2px dashed var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    margin-top: 8px;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent-2);
    background: rgba(139, 92, 246, 0.05);
}

.upload-zone.dragover {
    transform: scale(1.01);
}

.upload-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.upload-title {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 4px;
}

.upload-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.file-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    margin-top: 12px;
}

.file-name {
    font-size: 0.85rem;
    color: var(--text-accent);
    font-family: var(--font-mono);
}

/* ---- Progress ---- */
.progress-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    gap: 16px;
}

.progress-ring-container {
    position: relative;
    width: 120px;
    height: 120px;
}

.progress-ring {
    transform: rotate(-90deg);
}

.progress-ring-bg {
    fill: none;
    stroke: var(--bg-tertiary);
    stroke-width: 6;
}

.progress-ring-fill {
    fill: none;
    stroke: url(#progress-gradient);
    stroke-width: 6;
    stroke-linecap: round;
    transition: stroke-dashoffset 0.5s ease;
}

.progress-percent {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.progress-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.progress-sublabel {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--bg-tertiary);
    border-top-color: var(--accent-1);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ---- Analysis Results ---- */
.analysis-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 32px 20px;
}

.analysis-results {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.book-meta h3,
.chapters-list h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

#book-meta-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.meta-item {
    padding: 10px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.meta-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.meta-value {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.chapter-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-glass);
    transition: background var(--transition-fast);
}

.chapter-item:last-child {
    border-bottom: none;
}

.chapter-item:hover {
    background: var(--bg-glass);
}

.chapter-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    flex-shrink: 0;
}

.chapter-title {
    flex: 1;
    font-size: 0.9rem;
}

.chapter-para-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* ---- Brief ---- */
.brief-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 32px 20px;
}

.brief-tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}

.tab-btn {
    flex: 1;
    padding: 10px 16px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab-btn.active {
    background: var(--accent-3);
    color: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.brief-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.brief-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-base);
}

.brief-card:hover {
    border-color: rgba(255, 255, 255, 0.12);
}

.brief-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    cursor: pointer;
    user-select: none;
}

.brief-card-header h4 {
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.brief-card-toggle {
    color: var(--text-muted);
    font-size: 0.85rem;
    transition: transform var(--transition-fast);
}

.brief-card.expanded .brief-card-toggle {
    transform: rotate(180deg);
}

.brief-card-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.brief-card.expanded .brief-card-body {
    max-height: 600px;
}

.brief-card-content {
    padding: 0 18px 18px;
}

.brief-card-content textarea {
    width: 100%;
    min-height: 120px;
    resize: vertical;
    font-size: 0.85rem;
    line-height: 1.7;
}

/* ---- Glossary ---- */
.glossary-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.glossary-count {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.glossary-table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
}

.glossary-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.glossary-table th {
    padding: 10px 14px;
    text-align: left;
    background: var(--bg-tertiary);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.glossary-table td {
    padding: 8px 14px;
    border-top: 1px solid var(--border-glass);
}

.glossary-table tr:hover td {
    background: var(--bg-glass);
}

.glossary-table td[contenteditable="true"] {
    cursor: text;
    outline: none;
}

.glossary-table td[contenteditable="true"]:focus {
    background: rgba(139, 92, 246, 0.08);
    box-shadow: inset 0 0 0 1px var(--accent-2);
}

.category-badge {
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 100px;
    font-weight: 500;
}

.category-badge.term {
    background: rgba(79, 172, 254, 0.15);
    color: var(--info);
}

.category-badge.name {
    background: rgba(250, 112, 154, 0.15);
    color: #fa709a;
}

.category-badge.other {
    background: rgba(67, 233, 123, 0.15);
    color: var(--success);
}

/* ---- Translation Progress ---- */
.translate-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 32px 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.translate-stats {
    display: flex;
    justify-content: space-around;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.translate-progress-bar {
    height: 10px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-glass);
}

.translate-progress-bar::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: linear-gradient(90deg, transparent 94%, var(--bg-primary) 94%);
    background-size: 20px 100%;
    z-index: 2;
}

.translate-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-3), var(--accent-1));
    box-shadow: 0 0 15px var(--accent-1);
    transition: width 0.5s cubic-bezier(0.17, 0.67, 0.83, 0.67);
}

.translate-log {
    max-height: 300px;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.8;
}

.log-entry {
    padding: 4px 0;
    color: var(--text-muted);
}

.log-entry.success {
    color: var(--success);
}

.log-entry.error {
    color: var(--error);
}

.log-entry.active {
    color: var(--info);
}

.translate-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* ---- MTPE Workspace ---- */
.mtpe-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    border-bottom: 1px solid var(--border-glass);
    background: rgba(5, 5, 8, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 100;
    flex-wrap: wrap;
    gap: 8px;
}

.mtpe-header-left,
.mtpe-header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.mtpe-header-left h2 {
    font-size: 1rem;
}

.mtpe-header-center {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chapter-select {
    max-width: 240px;
}

.mtpe-progress {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.mtpe-workspace {
    display: flex;
    height: calc(100vh - 100px);
    overflow: hidden;
}

.mtpe-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.pane-header {
    padding: 10px 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    background: rgba(5, 5, 8, 0.2);
    border-bottom: 1px solid var(--border-glass);
    flex-shrink: 0;
}

.pane-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px 20px;
}

.mtpe-divider {
    width: 1px;
    background: var(--border-glass);
    flex-shrink: 0;
}

.para-block {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    transition: all var(--transition-fast);
    line-height: 1.8;
    font-size: 0.9rem;
    border: 1px solid transparent;
    cursor: pointer;
}

.para-block:hover {
    background: var(--bg-glass);
}

.para-block.active {
    background: rgba(139, 92, 246, 0.06);
    border-color: var(--accent-3);
}

.para-block.status-done {
    border-left: 3px solid var(--success);
}

.para-block.status-editing {
    border-left: 3px solid var(--warning);
}

.para-block-translated {
    outline: none;
    min-height: 40px;
}

.para-block-translated:focus {
    background: rgba(139, 92, 246, 0.04);
}

.para-status-icon {
    float: right;
    font-size: 0.75rem;
    margin-left: 8px;
    margin-top: 2px;
    opacity: 0.6;
}

.mtpe-footer {
    padding: 8px 20px;
    border-top: 1px solid var(--border-glass);
    background: rgba(5, 5, 8, 0.4);
    backdrop-filter: blur(10px);
    text-align: center;
}

.mtpe-shortcuts {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.mtpe-shortcuts kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    border: 1px solid var(--border-glass);
    margin: 0 2px;
}

/* ---- Modal ---- */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.modal.hidden {
    display: none;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
}

.modal-content {
    position: relative;
    z-index: 1;
    max-width: 480px;
    width: 90%;
    text-align: center;
}

.modal-content h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.modal-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.export-options {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.export-option {
    flex: 1;
    padding: 16px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--text-primary);
    font-family: var(--font-main);
}

.export-option:hover {
    border-color: var(--accent-2);
    background: rgba(139, 92, 246, 0.08);
    transform: translateY(-2px);
}

.export-option.selected {
    border-color: var(--accent-1);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}

.export-icon {
    font-size: 1.5rem;
}

.export-name {
    font-size: 0.85rem;
    font-weight: 500;
}

.export-ext {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.export-filter {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.export-filter input[type="checkbox"] {
    width: auto;
    margin-right: 6px;
    accent-color: var(--accent-1);
}

/* ---- Toast ---- */
#toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
    animation: toastIn 0.3s ease;
    max-width: 360px;
}

.toast.success {
    border-left: 3px solid var(--success);
}

.toast.error {
    border-left: 3px solid var(--error);
}

.toast.info {
    border-left: 3px solid var(--info);
}

@keyframes toastIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 100px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .form-row {
        flex-direction: column;
    }

    .lang-arrow {
        text-align: center;
        padding: 0;
    }

    .mtpe-workspace {
        flex-direction: column;
    }

    .mtpe-divider {
        width: 100%;
        height: 1px;
    }

    .mtpe-pane {
        height: 50vh;
    }

    .export-options {
        flex-direction: column;
    }

    .mtpe-header {
        flex-direction: column;
        align-items: stretch;
    }

    .translate-stats {
        flex-direction: column;
        gap: 16px;
    }

    #book-meta-content {
        grid-template-columns: 1fr;
    }
}

/* ---- Landing Footer ---- */
.landing-footer {
    padding: 32px 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    font-size: 0.75rem;
    color: var(--text-muted);
    opacity: 0.6;
}

.landing-footer a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition-fast);
}

.landing-footer a:hover {
    color: var(--text-accent);
    text-decoration: underline;
}

.landing-footer .divider {
    color: var(--border-glass);
}

/* ---- Balance & Topup ---- */
.balance-container {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    padding: 2px 2px 2px 10px;
    border-radius: 100px;
    border: 1px solid var(--border-glass);
}

.balance-container .coin-badge {
    background: transparent;
    padding: 0;
}

#btn-topup {
    width: 28px;
    height: 28px;
    padding: 0;
    font-size: 0.8rem;
    border-radius: 50%;
    background: var(--gradient-primary);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

#btn-topup:hover {
    transform: scale(1.1);
    filter: brightness(1.2);
}

/* ---- Topup Modal ---- */
.topup-packages {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 16px;
}

.package-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    padding: 16px;
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-base);
    position: relative;
}

.package-card:hover {
    background: var(--bg-glass-hover);
    border-color: var(--accent-1);
    transform: translateY(-4px);
}

.package-card.featured {
    border-color: var(--accent-1);
    background: rgba(139, 92, 246, 0.05);
}

.package-card.featured .p-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-1);
    color: white;
    font-size: 0.65rem;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: bold;
    text-transform: uppercase;
}

.p-header {
    font-weight: bold;
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.p-price {
    font-size: 0.85rem;
    color: var(--success);
    font-weight: 500;
}

.topup-status {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-glass);
    border-top: 2px solid var(--accent-1);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}